/*
 * Copyright 2007-2009 Thomas Krause (thomas@berlin-reloaded.de)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.gidoo.wickettools;

import org.apache.wicket.Component;
import org.apache.wicket.IRequestTarget;
import org.apache.wicket.ajax.AjaxRequestTarget;

/**
 * Some helper tools for Wicket.
 * @author <a href="mailto:thomas@berlin-reloaded.de">Thomas Krause</a>
 */
public class WicketTools 
{
  /**
   * Will add components to the current Ajax request target in order to update them.
   * Use this function it you don't get a target by the callback-function you are in.
   * This will do nothing if there is no Ajax request target or if the component
   * has not been rendered yet.
   * @param components The components you want to update.
   * @param parent The parent where to get the request target from.
   */
  public static void addToAjaxRequestTarget(Component[] components, Component parent)
  {
    if(parent.hasBeenRendered())
    {    
      IRequestTarget target = parent.getRequestCycle().getRequestTarget();
      if(target instanceof AjaxRequestTarget)
      {
        AjaxRequestTarget at = (AjaxRequestTarget) target;
        for(Component c : components)
        {
          at.addComponent(c);
        }
      }
    }
  }
  
}
